In the early nineties, Emerson's marriage with his first wife ended. Emerson continued his studies of acting at the University of Alabama's Fine Arts Program. In 1998, Emerson married Carrie Preston, a fellow actress, whom he had met while performing Hamlet in Alabama.

Emerson's first major television acting role was on The Practice in 2001, where he had a recurring role as a serial killer, William Hinks. This performance garnered him an Emmy Award as "Outstanding Guest Actor in a Drama Series." Emerson also portrayed the mysterious Zepp Hindle in Saw, a film which also featured Ken Leung. The character he played in Saw will now be featured in a video game from the film of the same name.

-The series was officially picked up by CBS on May 13, 2011,[3] and is slated to debut on Thursday, September 22, 2011, in the 9 pm (E/P) time slot.[4]

-According to CBS, Person of Interest received the highest test ratings of any drama pilot in 15 years, what one CBS executive called "crazy broad appeal you don't usually see." The ratings prompted CBS to move CSI, which had occupied that slot for over 10 years, to Wednesday 10/9c to make room for Person of Interest. [5]